22 Science-Backed Study Tips to Ace a Test

With back-to-school commercials showing at full speed ahead, it's time to say sayonara to those summer days and once more remember how to study.

But while barricading yourself in the library might be tried and true (or at least tried), there is a better way—in fact, there's at least 22 of them. So go forth—fearlessly take on the tests for anything from AP Misery to Orgo 3000, with these science-backed tips.

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Early human ancestor Lucy 'died falling out of a tree'

The famous fossil was scanned during a break on a US museum tour

New evidence suggests that the famous fossilised human ancestor dubbed "Lucy" by scientists died falling from a great height - probably out of a tree.
CT scans have shown injuries to her bones similar to those suffered by modern humans in similar falls.

The 3.2 million-year-old hominin was found on a treed flood plain, making a branch her most likely final perch.

It bolsters the view that her species - Australopithecus afarensis - spent at least some of its life in the trees.
It's tested every day in emergency rooms all around the planetProf John Kappelman, Univeristy of Texas at Austin.

Writing in the journal Nature, researchers from the US and Ethiopia describe a "vertical deceleration event" which they argue caused Lucy's death.
In particular they point to a crushed shoulder joint, of the sort seen when we humans reach out our arms to break a fall, as well as fractures of the ankle, leg bones, pelvis, ribs, vertebrae, arm, jaw and skull.